An auxiliary sequence for computing A300250. See comments and examples.

Terms

a(0) =0a(1) =1a(2) =1a(3) =5a(4) =1a(5) =19a(6) =1a(7) =69a(8) =5a(9) =19a(10) =1a(11) =2123a(12) =1a(13) =19a(14) =19a(15) =4165a(16) =1a(17) =2131a(18) =1a(19) =2125a(20) =19a(21) =19a(22) =1a(23) =4228171a(24) =5a(25) =19a(26) =69a(27) =2125a(28) =1a(29) =526631